<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <title>菜鸟教程(runoob.com)</title>

    <script type="text/javascript">
        function WebSocketTest() {
            if ("WebSocket" in window) {
                // alert("您的浏览器支持 WebSocket!");

                // 打开一个 web socket
                var ws = new WebSocket("ws://localhost:3001");
                // var ws = new WebSocket("ws://192.168.10.226:8080/boot/websocketEntry");

                ws.onopen = function () {
                    // Web Socket 已连接上，使用 send() 方法发送数据
                    ws.send("发送数据");
                    // alert("数据发送中...");
                };

                ws.onmessage = function (evt) {
                    var received_msg = evt.data;
                    try{
                        console.error("parse",JSON.parse(received_msg));
                    }catch (e){
                        console.error(received_msg);
                    }
                    // alert("数据已接收...\n" + received_msg);
                };

                ws.onclose = function () {
                    // 关闭 websocket
                    alert("连接已关闭...");
                };
            }

            else {
                // 浏览器不支持 WebSocket
                alert("您的浏览器不支持 WebSocket!");
            }
        }
    </script>

</head>
<body>

<div id="sse">
    <a href="javascript:WebSocketTest()">运行 WebSocket</a>
</div>

</body>
</html>